Arab Today, arab today audi to introduce lightweight springs
Last Updated : GMT 21:09:51
Arab Today, arab today
Arab Today, arab today

Audi to introduce lightweight springs

Arab Today, arab today

Arab Today, arab today Audi to introduce lightweight springs

Audi to introduce
Ingolstadt - Arab Today

Audi plans to introduce new, lightweight suspension springs made of glass fibre-reinforced polymer (GFRP) in an upper mid-size model before the end of the year, reinforcing its leading role in automotive lightweight construction.
The GFRP spring, which Audi developed in collaboration with an Italian supplier, even looks different than a steel spring. It is light green, the fiber strand is thicker than the wire of a steel spring, and it has a slightly larger overall diameter with a lower number of coils.
Most importantly, however, it is some 40 per cent lighter. Whereas a steel spring for an upper mid-size model weighs nearly 2.7 kg, a GFRP spring with the same properties weighs approximately 1.6 kg. Together the four GFRP springs thus reduce the weight by roughly 4.4 kg, half of which pertains to the unsprung mass.
“The GFRP springs save weight at a crucial location in the chassis system. We are therefore making driving more precise and enhancing vibrational comfort,” said Dr Ulrich Hackenberg, member of the Board of Management for Technical Development at Audi.
The core of the springs consists of long glass fibres twisted together and impregnated with epoxy resin. A machine wraps additional fibers around this core — which is only a few millimetres in diameter — at alternating angles of plus and minus 45 degrees to the longitudinal axis.
These tension and compression plies mutually support one another to optimally absorb the stresses acting on the component. In the last production step, the blank is cured in an oven at temperatures of over 100 degrees Celsius, the company said.
The GFRP springs can be precisely tuned to their respective task, and the material exhibits outstanding properties. It does not corrode, even after stone chipping, and is impervious to chemicals such as wheel cleaners. Last but not least, production requires far less energy than the production of steel springs, it said.
Source: Opel

 

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